Buddhist view of rebirth
I kind of hope that the answer is not rebirth. If reincarnation occurs it seems likely that suicide will result in less than favourable conditions. It doesn't seem to be random, but instead based on the karma (good or bad) that one has accrued through many lives.
Suicide itself is deemed a negative karma so the result will be a life with net equal suffering as this one with only the added negative karma accrued by suicide itself.
Thus "re-rolling the dice" via suicide is bound to result in nearly equal, but potentially marginally worse condition. If we take the Buddhists' perspective for face value.
I hope the void exists because that would be far simpler...
Oblivion... or something far more grand than arbitrarily defined by religion. The concept of hell never made sense to me.
Something far more grand also seems a possibility.
I'm sure in this case we are like ants to humans in comparison. In which case, there's no point worrying about it.